5.3.1.8 Ca2+ order of activation Mg2+ > Ca2+ > Mn2+ > Co2+ > Ni2+ 690577 5.3.1.8 Co2+ order of activation Mg2+ > Ca2+ > Mn2+ > Co2+ > Ni2+ 690577 5.3.1.8 diphosphate 0.5 mM, 120% of initial activity 692361 5.3.1.8 Mg2+ order of activation Mg2+ > Ca2+ > Mn2+ > Co2+ > Ni2+ 690577 5.3.1.8 Mn2+ Mg2+ > Ca2+ > Mn2+ > Co2+ > Ni2+ 690577 5.3.1.8 Ni2+ order of activation Mg2+ > Ca2+ > Mn2+ > Co2+ > Ni2+ 690577